Truck-bolster or other car part.



S. HANSSON & I. MOELLBR. TRUCK BOLSTBR OR OTHER GAR PART.

APPLICATION Plum APR. 1, 1914.

Patented Dec. 22, 1914.

a I I g FIG-4 INVENTORS wywm THE NORRIS PETERS CO FHbTn LITIIU v WAS-WIN!- -'-"l I? 1 sonnn rrnivsson AND ISAK MUELLER, on NEW eLAseow, nova soorrA, cannon, ASSIGNORS F ONE-THIRD TO HENDERSON B. DOUGLAS, OF NEW GLASGOW,

NOVA SCOTIA, CANADA.

TRUGK-BOLSTER on ornna can Paar.

Specification of Letters Patent.

Patented Dec. 22, 1914.

Application filed April 1, 1914.. Serial No. 828,842.

, a car part of the type described which is of simple construction, which can be readily manufactured, which gives max1mum strength for the amount'of metal employed,

which can be manufactured from standard rolled sections, which can be readily assembled, and which is very durable and not liable to fail under service conditions.

In the drawings, which represent one embodiment of the invention, Figure 1 is a side elevation; Fig. 2 is a plan view; Fig. 3 is a cross section on the line 3 3, Fig. 1; Fig. i is a cross section on the line H, F g.1,

Fig. 5 is a cross section on the line 55, Fig. l; and Fig. 6 is a cross sectional view showing the shape of the rolled member from which the car part is produced.

In the drawings the invention has been shown as a truck bolster, but this is merely for the purpose of illustration, and it is to be understood that the invention is equally applicable to brake beams, truck side frames, or to any other car member in which a beam effect is to be secured. The truck bolster shown has its compression and tension members formed as integral parts of the same member, which is preferably a rolled metal member having a cross sectional shape shown in Fig. 6, that is, a modilied channel section having a web 1 and flanges 2, said flanges being wider on one side of the web than on the other. The

middle portion of the web is thickened or reinforced, as atS, and this thickened portion is preferably provided with a large or massive rib 41 shown ashaving a semicircular cross section and lying on the same side of the web as the wider portions of the flanges 2. This is a standard cross sectional shape, but can be specially rolled withou difi'iculty when necessary. 7. y p 7 i In constructing the bolster shown a memher having the cross sectional shape shown in Fig. 6 and having the proper length is spllt longitudinally along two parallel lines, indicatedby the dotted lines at 5 in Fig. 6 and forming the longitudinal slits 6. These slits stop somewhat short of the extreme ends of the rolled member and lie on the opposite sides of the thickened rib 1, the metal being sheared through the thickened value alongthe edges of the slits. By shear ing the metal inv this way a portion of the portion 3 so as to obtain a greater shearing web is left attached to each of the flanges 2 and the rolled member is' separated into three distinct parts, two side members A of substantially T-shape and a central solid member B. p i

The central member B is depressed or bent downwardly between its ends to form, v I

thebottom or tension member of the bolster, while the side members A are bentupwardly and spread apart. Theside' membersA are elevated to a less amount than the centralv 1 member is depressed, but the lateral spread g ven'to those members compensates for the difference, so that the three members when bent to the form shown in-Figs. 1 and 2 are.

in the condition of nostrain and have neither been compressed nor stretched.

Also, by spreading the upper members apart a greater section modulus sidewise is secured'in the compression member.

The tension and compression members of the bolster are connected by .a center brace, which comprises a castlng 7 having 1ts lower end channeled, as at v8, to fit the top surface of the depressed member B, said casting also having vertical ribs 9 extending both longitudinally and horizontally or transversely of the bolster. At its upper end the casting! is provided with opposite long1- tudinally extending flanges 10 lying under the web portions of the side compression members A and supporting the same. One

of the upper corner portions of the casting.

7 is made as a separate member 11, which separates fromthe other portion of the cast ing along the line 12, Fig. '1. This ar rangement'enables the center brace to be readily inserted into position from the side. The larger part is inserted first in a tilted position, and is then turned up. The smaller part of the casting is then inserted and is secured to the otherpart as by rivets 13.

The usual center plate or bearing plate 14 is applied to the upper surfaces .of the flanged portions of the side members and directly above the center brace, as shown'm Fig. 4, and the center brace, compression members A and bearing plate 14 are then securely fastened together as by rivets 15.

The end portions of the bolster are pro vided with the usual end column castings 16, which in the present form are shown as channel parts having their flanges riveted to the wider flange portions of the main rolled member as at 17. The end column castings,

member, indicated at 18, and said castings however, are made of such length that they extend inwardly from the end of the bolster beyond the ends of the slits in the main;

are each provided with a central longitudinal rib or-projection l9 lying directly under and supporting the central rib l of the main member; The central longitudinal portion of the bolster is consequently supported by the end column casting on both sides of the ends of the slits or openings, which pre-' vents any liability of'these slits opening up farther because of shock or vibration in use.

The bolster may also be provided with the usual side bearings 20, which are shown as riveted directly to the web portions of the in the ends of the slits in the bolster, and

compression members A. at points just with- ,which therefore also act as tie plates for securing the side members A together and preventingthem from spreading.

The bolster described is of simple construction, is very durable and is exceedingly strong for the amount of metal used. The

tensionand compression members are'bent 1 cincreased. The side members are very strong into, the form shownwithout: stretching; or

I compressing the metal and at the same time the lateral sectionmodulus. of thebolster is both horizontally and vertically. In the horizontal direction the web portions 1- of the side members reinforce them against lateral strain while in'the vertical direction a they are reinforced by the flanges 2. The.

web portions 1. of the side members also rest directly upon the center'brace and form an efficient connection thereto. The depressed metal. member of the bolster is a solid member and is therefore strong in all directions.

It is sheared from the web of the bolster along reinforced or thickened lines, so that a' greater shearing value is produced at the ends of the slits and reduces the liability of the slits opening up or lengthening. The bolster can be readily constructed from co1nmercialshapes and can be adapted for any 'usewhere a beam eifect is desired.

What we claim) isz+ V c. 1.. A carparthaving its compression and tension members formed of a single integral member having flanges anda web provided. with a thickened central longitudinal por-.

tion, said web beingslit longitudinally along two parallel lines so as to leave a portion of the web connected to each flange, the slits stopping short of the ends of said member,

.the flange portions being bent upwardly to form compression members and the intermediate thickened portion of the web being bent downwardly to form a tension member, and a center brace connecting the ten slon and compresslon members.

2. A car part having its compressionand tension members formed of a single integral member having aweb and side flanges, said web being sheared longitudinally along two parallel lines soas to leave a portion of the web connected tothe sidev flanges, the slits thus formed stopping short of the endsof the said members, the sideflange portions being bent upwardly and the intermediateand a center-{brace connecting said tension] and compression members, said center brace being formed 1n two parts adapted to be in,-

serted into positionfrom one side and then;

secured together.

4h A car part having its compression tension members formed of. a single. integral member having flanges and a Web, said, Web being sheared longitudinally on twopar allel lines so as to, leave a portion of the web connected to each flange, the slits stopping short of the ends of the member, the flange portions beingibent upwardlyand theintermediate portion. of the webzbeing bent down wardly, and end columnxmembers secured to the ends of said car part, and provided with means for supporting the central portionof the web on, each side of the ends of said slits. I

5. A car part having its compression and tension membersfformedof a single integral member having-flanges and a web, said web being sheared longitudinally on, two parallel lines so astoleave a portion of the web connected to each flange, the slits stopping short of the endsof the member,the flange portions being bent downwardly, and end column members secured to the ends of said 1 car parts, said end column members beingf channel shaped in cross section and being. provide with a central longitudinal rib supporting the central portion of the web of said car part on said slits.

6. A car part having its compression and tension members formed of a single integral member having flanges, and a web provided with a thickened central longitudinal porboth sides of the ends oftion having a rib said web being slit longitudinally through the thickened portion thereof on opposite sides of said rib so as to leave a portion of the web connected to each flange and thereby forming a central and two side members, the side members being bent upwardly and the central member being bent downwardly to form the compression and tension members.

7. A car part having its compression and tension members formed of a single integral member having flanges and a web provided with a thickened central longitudinal portion having a rib, said web being slit longitudinally through the thickened portion thereof on opposite sides of said rib so as Copies of this patent may be obtained for to leave a portion of the web connected to each flange and thereby forming a central and two side members, the side members being bent upwardly and the central member being bent downwardly to form the compression and tension members, and a central brace resting on the depressed member and supporting the two elevated side members.

In testimony'whereof, we have hereunto set our hands.

SOREN HANSSON. ISAK MOELLER.

Witnesses:

JAMES ROY, ARTHUR GARRETT.

five cents each, by addressing the Commissioner of fatents, Washington, D. 0. 

